Patents by Inventor Elwin H. Fleckenstein

Elwin H. Fleckenstein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Miniature belt grinder
    Patent number: 4411106
    Abstract: A belt grinder having a casing, a drive pulley supported in the casing, a contact pulley mounted on an arm extending from a forward opening in the casing, and endless belt trained about the pulleys, a pneumatic motor housing projecting into the casing, passages in the housing communicating with an annular chamber in the casing, and a fitting secured to the housing having an exhaust passage in communication with the interior thereof, a nozzle member located in the exhaust passage and a slotted passageway communicating with the annular chamber and with the outer periphery of the nozzle member.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: October 25, 1983
    Assignee: Dynabrade, Inc.
    Inventors: Elwin H. Fleckenstein, Walter N. Welsch
  • Miniature belt grinder
    Patent number: 4368597
    Abstract: A portable belt grinder having a casing, a drive pulley supported in the casing, a contact pulley mounted on an arm extending from the casing, an endless belt trained about the pulleys and a belt tensioning assembly having a roller eccentrically mounted on a manually rotatable rod, a camming surfaced plunger coacting with the roller and a spring interposed between the arm and the plunger. A cover is pivotally mounted on the casing having an aperture which coacts with a latching button rotatably fixed to the casing and having a vertical axis slightly spaced from the vertical axis of the aperture.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: January 18, 1983
    Assignee: Dynabrade, Inc.
    Inventor: Elwin H. Fleckenstein
  • Quick change adapter for mounting rotatable grinding elements
    Patent number: 4237659
    Abstract: An adapter is provided to facilitate quick change mounting of rotatable grinding elements without the use of a tool, such as a wrench or key.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: December 9, 1980
    Assignee: Dynabrade, Inc.
    Inventors: Walter N. Welsch, Elwin H. Fleckenstein
  • Guide wheels for belt grinder
    Patent number: 4178723
    Abstract: A pair of guide wheels (6) for a hand held abrading device (1) of the endless abrasive belt (2) variety for preventing slewing, side slipping and gouging of the surface of a workpiece (8) when a raised imperfection (9) such as a weld bead is abraded to be flush with the surface (10). The guide wheels (6), mounted on the axle (5) of the contact wheel (3) of the device, are circumferentially adjustable to compensate for different radial dimensions of the sum of the thickness of the abrasive belt and the radius of the guide wheel and include a resilient tire guide ring (11) and a circumferentially round guide surface (12) having different radii at different lateral positions.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: December 18, 1979
    Assignee: Dynabrade, Inc.
    Inventors: Elwin H. Fleckenstein, Walter N. Welsch
  • Arm for a belt grinding machine
    Patent number: D254789
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: April 22, 1980
    Assignee: Dynabrade, Inc.
    Inventor: Elwin H. Fleckenstein
  • Machine housing for belt-type surface finishing tool
    Patent number: D255034
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: May 20, 1980
    Assignee: Dynabrade, Inc.
    Inventors: Walter N. Welsch, Elwin H. Fleckenstein
  • Contact arm unit for a belt grinding machine
    Patent number: D262116
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: December 1, 1981
    Assignee: Dynabrade, Inc.
    Inventor: Elwin H. Fleckenstein
  • Casing for a portable belt grinder
    Patent number: D265172
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: June 29, 1982
    Assignee: Dynabrade, Inc.
    Inventors: Elwin H. Fleckenstein, Walter N. Welsch
  • Universal pneumatic swivel
    Patent number: D270369
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: August 30, 1983
    Assignee: Dynabrade, Inc.
    Inventor: Elwin H. Fleckenstein